New style for the documentation. Looks more like the website now.

docs/tutorial/introduction.rst

@@ -0,0 +1,29 @@
+Introducing Flaskr
+==================
+
+We will call our blogging application flaskr here, feel free to chose a
+less web-2.0-ish name ;)  Basically we want it to do the following things:
+
+1. let the user sign in and out with credentials specified in the
+   configuration.  Only one user is supported.
+2. when the user is logged in he or she can add new entries to the page
+   consisting of a text-only title and some HTML for the text.  This HTML
+   is not sanitized because we trust the user here.
+3. the page shows all entries so far in reverse order (newest on top) and
+   the user can add new ones from there if logged in.
+
+We will be using SQlite3 directly for that application because it's good
+enough for an application of that size.  For larger applications however
+it makes a lot of sense to use `SQLAlchemy`_ that handles database
+connections in a more intelligent way, allows you to target different
+relational databases at once and more.  You might also want to consider
+one of the popular NoSQL databases if your data is more suited for those.
+
+Here a screenshot from the final application:
+
+.. image:: ../_static/flaskr.png
+   :align: center
+   :class: screenshot
+   :alt: screenshot of the final application
+
+.. _SQLAlchemy: http://www.sqlalchemy.org/